Got my copy today. I assume the first pressing comes with a special lenticular "3D" version of the artwork as that's what I've got.
As for the songs. Mega Over Drive is pretty good. There's genuine conviction there and it's catchy. I like the video as well, a nice complete vision around this.
Exclamation is OK. Heavier than Mega Over Drive but retaining a similar feel. Very B-sidey, but in a good way.
Marshmallow Head is the mental song of the bunch it seems. Bits of Devo and B-52's all over it. Fumi's singing is great, again a nice confident song.
I My Me Mine 2013 and Baby Bias 2013 are OK. I don't really see the point of these as they're so close to the originals but sound inferior to me. The ending of I My Me Mine is funny though, but these sit alongside those other reworkings as being pure filler to me.
Overall though, pretty nice. I always prefer Polysics in the Mini-album/EP format.